If the magnitude of the applied potential is decreased in the coil, then the direction of the induced current and the current due to applied potential will bea)the direction of the induced current will be opposite to the current due to applied potentialb)the direction of the induced current will be the same as the current due to applied potentialc)the induced current will be zerod)None of theseCorrect answer is option 'B'. Can you explain this answer? - EduRev Electrical Engineering (EE) Question

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If the magnitude of the applied potential is decreased in the coil, then the direction of the induced current and the current due to applied potential will be

a)
the direction of the induced current will be opposite to the current due to applied potential
b)
the direction of the induced current will be the same as the current due to applied potential
c)
the induced current will be zero
d)
None of these

Correct answer is option 'B'. Can you explain this answer?

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Test: Self Inductance - 1

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If the magnitude of the applied potential is decreased in the coil, th...

Concept:

Self-induction:

When current flows through a coil or circuit, the magnetic field is produced and hence a magnetic flux gets associated with this coil or circuit.
This magnetic flux is directly proportional to the current flowing in the circuit.
If the current through the coil is changed, the magnetic field also changes, and hence the magnetic flux associated with it also changes, and as a result of this, an emf is induced in the coil or circuit.
This phenomenon is called self-induction.

Lenz's Law:

According to this law, the emf will be induced in a coil due to a changing magnetic flux in such a way that it will oppose the cause which has produced it.
This law states that the induced emf in a conductor due to a changing magnetic flux is such that the magnetic field created by the induced emf opposes the change in a magnetic field.

where N = number of loops and dϕ = Change in magnetic flux

The above equation is given by Faraday's law, but the negative sign is a result of Lenz's law.

Explanation:

If the magnitude of the applied potential is decreased in the coil, the current in the coil also decreases, and due to the self-induction, an emf will get induced in the coil due to which a current will also induce in the coil.
According to Lenz's law, the direction of induced emf is such that it always opposes change due to which it is produced.
So here the current in the coil is decreasing, so the induced emf will try to increase it, therefore the direction of the induced current will be the same as the current due to applied potential.
Hence, option 2 is correct.

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If the magnitude of the applied potential is decreased in the coil, then the direction of the induced current and the current due to applied potential will bea)the direction of the induced current will be opposite to the current due to applied potentialb)the direction of the induced current will be the same as the current due to applied potentialc)the induced current will be zerod)None of theseCorrect answer is option 'B'. Can you explain this answer?

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If the magnitude of the applied potential is decreased in the coil, then the direction of the induced current and the current due to applied potential will bea)the direction of the induced current will be opposite to the current due to applied potentialb)the direction of the induced current will be the same as the current due to applied potentialc)the induced current will be zerod)None of theseCorrect answer is option 'B'. Can you explain this answer? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about If the magnitude of the applied potential is decreased in the coil, then the direction of the induced current and the current due to applied potential will bea)the direction of the induced current will be opposite to the current due to applied potentialb)the direction of the induced current will be the same as the current due to applied potentialc)the induced current will be zerod)None of theseCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for If the magnitude of the applied potential is decreased in the coil, then the direction of the induced current and the current due to applied potential will bea)the direction of the induced current will be opposite to the current due to applied potentialb)the direction of the induced current will be the same as the current due to applied potentialc)the induced current will be zerod)None of theseCorrect answer is option 'B'. Can you explain this answer?.

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